Earthquake
More extensive information will be added here - including tweets about this quake, lives affected (or lost), neighboring communities and cities affected, member comments, "who felt it", and more. Proximity and distance to the earthquake is already availble to logged-in members with an address on their profile. If the member is within 0-1000km of the earthquake, the distance matrix will calculate land transport distance and a the shortest distance between two points ( as the crow flies ). If the earthquake occurred at sea, nautical miles are also calculated.
Members who request notification will automatically receive an email and/or SMS text message for any earthquakes greater than 5.5. If the member adds family contact, the contact will be notified by email that "A Xm earthquake has occurred within Xkm of membername.". All notifications are on an opt-in basis. The IMOK feature will allow the member to single-click on their phone (or in the email) to quickly signal they are fine. IMOK is available for logged in members on an opt-in basis.
The 3D globe (right) will create two pins - one for the earthquake and one for the geographic location of the member viewing this page. If the visitor is not logged in, only one pin for the quake is rendered. The exact position of the moon at the time of the earthquake is included for your interest, and will display illumination %, phase, distance from Earth, the sun, and whether or not the moon was above (or below) the horizon. Some will argue the moon plays no role in influencing earthquakes, and some will argue the opposite. After all, the moon has an effect on tides. Either way, including the appearance of the moon at the exact time of the earthquake is extremely cool. Special thanks to the US Navy (military observatory) for making it possible.
Screenshot example displaying member's proximity:
Calculating
Array ( [type] => Feature [properties] => Array ( [mag] => 7.7 [place] => southeast of the Loyalty Islands [time] => 1684465023129 [updated] => 1684898776561 [tz] => [url] => https://earthquake.usgs.gov/earthquakes/eventpage/us6000kd0n [felt] => 31 [cdi] => 5.2 [mmi] => 3.89 [alert] => green [status] => reviewed [tsunami] => 1 [sig] => 928 [net] => us [code] => 6000kd0n [ids] => ,at00ruvxj7,pt23139000,us6000kd0n,usauto6000kd0n, [sources] => ,at,pt,us,usauto, [types] => ,dyfi,finite-fault,general-text,ground-failure,impact-link,internal-moment-tensor,internal-origin,losspager,moment-tensor,origin,phase-data,shakemap, [nst] => 277 [dmin] => 3.111 [rms] => 0.87 [gap] => 15 [magType] => mww [type] => earthquake [title] => M 7.7 - southeast of the Loyalty Islands [products] => Array ( [dyfi] => Array ( [0] => Array ( [indexid] => 22771301 [indexTime] => 1684637728130 [id] => urn:usgs-product:us:dyfi:us6000kd0n:1684637722412 [type] => dyfi [code] => us6000kd0n [source] => us [updateTime] => 1684637722412 [status] => UPDATE [properties] => Array ( [depth] => 18.027 [eventsource] => us [eventsourcecode] => 6000kd0n [eventtime] => 2023-05-19T02:57:03.000Z [latitude] => -23.1852 [longitude] => 170.7633 [magnitude] => 7.7 [maxmmi] => 5.2 [num-responses] => 31 [numResp] => 31 [original-signature] => MC0CFQCN7ZXIyxJ4ihoVBw6jjRR1aUnN6wIUWOIEvaELDctt0BnsyIc5KwnB/XM= [original-signature-version] => v1 [pdl-client-version] => Version 2.7.10 2021-06-21 ) [preferredWeight] => 158 [contents] => Array ( [dyfi_zip.geojson] => Array ( [contentType] => application/octet-stream [lastModified] => 1684637722000 [length] => 1247 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_zip.geojson [sha256] => IcRuz+UpNjj8da325yYXYNn79C/GGwrOYmJjh0p6C6I= ) [us6000kd0n_ciim_geo.pdf] => Array ( [contentType] => application/pdf [lastModified] => 1684637722000 [length] => 30371 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim_geo.pdf [sha256] => lKMBYUrdOa1trA0LNKDKHqJD2yA2l1p8jvfGju1WDmc= ) [us6000kd0n_ciim_imap.html] => Array ( [contentType] => text/html [lastModified] => 1684637722000 [length] => 734 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim_imap.html [sha256] => sQ8QSnMEyUZ2aRMhwck5+0VSv5BtbJi2I96vl/ZPLJQ= ) [dyfi_geo_10km.geojson] => Array ( [contentType] => application/octet-stream [lastModified] => 1684637722000 [length] => 3399 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_geo_10km.geojson [sha256] => glarA+v83IT2+GqrI0+HFMsMXTjZXMr4m6Yn3JieebM= ) [dyfi_geo_1km.geojson] => Array ( [contentType] => application/octet-stream [lastModified] => 1684637722000 [length] => 6105 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_geo_1km.geojson [sha256] => TxnpXhpua9YjgnwWf+aGk+rBR07MchYb/HI59sb84aA= ) [us6000kd0n_plot_numresp.ps] => Array ( [contentType] => application/postscript [lastModified] => 1684637722000 [length] => 30070 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_plot_numresp.ps [sha256] => j0wuwVX1FHq1FkCHaNYTPRLTU7xBCpjjMalONREZEQk= ) [us6000kd0n_plot_atten.txt] => Array ( [contentType] => text/plain [lastModified] => 1684637722000 [length] => 3253 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_plot_atten.txt [sha256] => vvMCO2NkhfSY2HFc3Dl5iPDxsL7yCUMacyUdPzwXFXY= ) [us6000kd0n_plot_numresp.txt] => Array ( [contentType] => text/plain [lastModified] => 1684637722000 [length] => 1336 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_plot_numresp.txt [sha256] => EuBSNh4gnYjJlFPoSASMzo5E3M1C5BPiPs1Tbz78mj4= ) [cdi_geo.txt] => Array ( [contentType] => text/plain [lastModified] => 1684637722000 [length] => 1106 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/cdi_geo.txt [sha256] => dSAbPGFN6PWGGHB/9g2b5MxX8IvawgeJVEvdanRsdd4= ) [contents.xml] => Array ( [contentType] => application/xml [lastModified] => 1684637722000 [length] => 4224 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/contents.xml [sha256] => 2hxTtv54guC2xg7l/xMto7bjAeJUQ3wUazjmSuXiXss= ) [us6000kd0n_ciim.pdf] => Array ( [contentType] => application/pdf [lastModified] => 1684637722000 [length] => 30861 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim.pdf [sha256] => 9S5tUiPhObanMmRpEZxtQYte/hwIWlrUCfoj2/U4xxk= ) [cdi_geo_1km.txt] => Array ( [contentType] => text/plain [lastModified] => 1684637722000 [length] => 2172 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/cdi_geo_1km.txt [sha256] => fsyY9KDAUDi1ccfONn8dOp+M0CSKhMiMewEQ5U86xvo= ) [dyfi_plot_atten.json] => Array ( [contentType] => application/json [lastModified] => 1684637722000 [length] => 3802 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_plot_atten.json [sha256] => omX7iiaNqawuSlEBqa2yoEDzAF+8Jnedupqy7qnmzNM= ) [cdi_geo.xml] => Array ( [contentType] => application/xml [lastModified] => 1684637722000 [length] => 3425 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/cdi_geo.xml [sha256] => bLlu805O8R09LEtSyCTQbDyyAb3dWvg4ufNLpKY4dgY= ) [us6000kd0n_plot_atten.jpg] => Array ( [contentType] => image/jpeg [lastModified] => 1684637722000 [length] => 50702 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_plot_atten.jpg [sha256] => VTCX+ulBXtkVmKGhU9pdOuCVJsXil0bVS3yvNtJS8i0= ) [us6000kd0n_ciim_geo.ps] => Array ( [contentType] => application/postscript [lastModified] => 1684637722000 [length] => 110970 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim_geo.ps [sha256] => lUhEdA2dvUyJ4lDRQsrQKgFBKII6j0NYKxnCIhU0MLQ= ) [us6000kd0n_plot_atten.ps] => Array ( [contentType] => application/postscript [lastModified] => 1684637722000 [length] => 51480 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_plot_atten.ps [sha256] => LQKzsoaMpgxrEV1l+USGgS2Ox04xiFV9FQyOL9Xj4OA= ) [us6000kd0n_ciim.ps] => Array ( [contentType] => application/postscript [lastModified] => 1684637722000 [length] => 116387 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim.ps [sha256] => i7HDMjlewi+23D2CiYjl/c7/htsMZQKdzJCDWT2E/Gc= ) [cdi_zip.xml] => Array ( [contentType] => application/xml [lastModified] => 1684637722000 [length] => 1734 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/cdi_zip.xml [sha256] => 974Voc9Co9FrKRNal5UQhTAUsFK4KVgoT2YZImEw36A= ) [dyfi_geo.kmz] => Array ( [contentType] => application/vnd.google-earth.kmz [lastModified] => 1684637722000 [length] => 1512 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_geo.kmz [sha256] => 24eYPPja692qjW4hFTCn05QOoQNZtraVpEsYzFQCdiI= ) [us6000kd0n_ciim.jpg] => Array ( [contentType] => image/jpeg [lastModified] => 1684637722000 [length] => 79642 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim.jpg [sha256] => jEPCFVZ8Wna5AhUpp9RZp4lQ/L2XYjjcJMF0dghBp5U= ) [dyfi_zip.kmz] => Array ( [contentType] => application/vnd.google-earth.kmz [lastModified] => 1684637722000 [length] => 1294 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_zip.kmz [sha256] => Yq8junWg4A2PYLVX1JKfijAN7fZXEOXJacij3T0YEYA= ) [cdi_zip.txt] => Array ( [contentType] => text/plain [lastModified] => 1684637722000 [length] => 919 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/cdi_zip.txt [sha256] => 8UQRK7lyl0GESL/mRfipqVcJgcnEJclfAjdVNh6r9PI= ) [event_data.xml] => Array ( [contentType] => application/xml [lastModified] => 1684637722000 [length] => 3056 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/event_data.xml [sha256] => anMK0T2FGKJwH6x2c+LfkB7QFHEX0oOTa1C2cXxTBgs= ) [dyfi_plot_numresp.json] => Array ( [contentType] => application/json [lastModified] => 1684637722000 [length] => 2154 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi_plot_numresp.json [sha256] => EL5WJCAhnYkmOV+4rWyHBoyTQKlcGsbLG1e7BK1nyjk= ) [us6000kd0n_ciim_geo.jpg] => Array ( [contentType] => image/jpeg [lastModified] => 1684637722000 [length] => 76676 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim_geo.jpg [sha256] => C5MbefnnJATib5rIJp3wJbiFwGw/F0yRHnFJxpuIC+Q= ) [dyfi.kmz] => Array ( [contentType] => application/vnd.google-earth.kmz [lastModified] => 1684637722000 [length] => 1179 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/dyfi.kmz [sha256] => j7ME+j4CH97b/3NAMg+lc4laM7jmzqBXwi1EYN04rpY= ) [us6000kd0n_plot_numresp.jpg] => Array ( [contentType] => image/jpeg [lastModified] => 1684637722000 [length] => 32861 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_plot_numresp.jpg [sha256] => 5Pv+q9RhxktjxrBI4Xnl+bh2s/29qlTcte1w6vfT4BI= ) [us6000kd0n_ciim_geo_imap.html] => Array ( [contentType] => text/html [lastModified] => 1684637722000 [length] => 2325 [url] => https://earthquake.usgs.gov/product/dyfi/us6000kd0n/us/1684637722412/us6000kd0n_ciim_geo_imap.html [sha256] => b6ckjQ5jTpmsTyZo1x6+YdHG+/Nhtod8pXVxAAK7VwE= ) ) ) ) [finite-fault] => Array ( [0] => Array ( [indexid] => 22762402 [indexTime] => 1684473128234 [id] => urn:usgs-product:us:finite-fault:us6000kd0n_1:1684473120112 [type] => finite-fault [code] => us6000kd0n_1 [source] => us [updateTime] => 1684473120112 [status] => UPDATE [properties] => Array ( [average-rise-time] => 8.24 [average-rupture-velocity] => 2.35 [crustal-model] => 1D crustal model interpolated from CRUST2.0 (Bassin et al., 2000). [depth] => 37.7000 [derived-magnitude] => 7.7458 [derived-magnitude-type] => Mw [eventsource] => us [eventsourcecode] => 6000kd0n [eventtime] => 2023-05-19T00:00:00.000Z [hypocenter-x] => 92.0000 [hypocenter-z] => 36.0000 [latitude] => -23.2290 [location] => southeast of the Loyalty Islands [longitude] => 170.6940 [maximum-frequency] => 0.1250 [maximum-rise] => 15.0000 [maximum-slip] => 3.0235 [minimum-frequency] => 0.0100 [model-dip] => 66.4643 [model-length] => 200.0000 [model-number] => 1 [model-rake] => -62.4512 [model-strike] => 105.1539 [model-top] => 5.9172 [model-width] => 64.0000 [number-longwaves] => 40 [number-pwaves] => 29 [number-shwaves] => 16 [original-signature] => MCwCFCI+x7XkuXPQL2hMMpjZzIkya5GNAhQcKyRqsXZSknBM5j+4N2bivBnpCQ== [original-signature-version] => v1 [pdl-client-version] => Version 1.10.1 2016-04-07 [review-status] => reviewed [scalar-moment] => 466392266144999997440.0000 [segment-1-dip] => 66.4643 [segment-1-strike] => 105.1539 [segments] => 1 [subfault-1-area] => 2106.9444 [subfault-1-length] => 64.1719 [subfault-1-width] => 32.8328 [time-windows] => 5 [velocity-function] => Asymetriccosine [version] => 1 ) [preferredWeight] => 158 [contents] => Array ( [coulomb.inp] => Array ( [contentType] => application/octet-stream [lastModified] => 1684472937000 [length] => 24986 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/coulomb.inp [sha256] => K+gPvdDsivq3OgpIRjU2mj6/u1lJG0JnIbCqH/SNYVQ= ) [properties.json] => Array ( [contentType] => application/json [lastModified] => 1684473119000 [length] => 1309 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/properties.json [sha256] => zkNChyHinsEfY8AsjMfiiuoyIGNn5Vqa34Od1L0Cnm0= ) [surface_deformation.disp] => Array ( [contentType] => application/octet-stream [lastModified] => 1684472937000 [length] => 123312 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/surface_deformation.disp [sha256] => JJke1PDEUmwYZGv7+4yh4rkvVCQZxkXY4QihDiba4/k= ) [basemap.png] => Array ( [contentType] => image/png [lastModified] => 1684472937000 [length] => 1134974 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/basemap.png [sha256] => dAUl5xsyGjJgGbipXM+4EITusHN66Sx0FFyEj4Qh52M= ) [shakemap_polygon.txt] => Array ( [contentType] => text/plain [lastModified] => 1684472937000 [length] => 192 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/shakemap_polygon.txt [sha256] => jxUZTd2vron3n29UCpG9n95MhG6sw7HIxChZsrAAXMU= ) [basic_inversion.param] => Array ( [contentType] => application/octet-stream [lastModified] => 1684472937000 [length] => 31556 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/basic_inversion.param [sha256] => ZIWwem+aksYk30GORGDjQKYhs9XqqGsHdQi/HPIG4lQ= ) [FFM.geojson] => Array ( [contentType] => application/octet-stream [lastModified] => 1684473118000 [length] => 290123 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/FFM.geojson [sha256] => hyTcNXcCFi9p0rVHVQUJXSpjxDZtRuG4+bDh6Rdt9Fs= ) [contents.xml] => Array ( [contentType] => application/xml [lastModified] => 1684473119000 [length] => 1946 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/contents.xml [sha256] => 5I8EwCL6C3gT5VVu0tmvnWsik07q6cIC9Zb2ruYANXY= ) [moment_rate.mr] => Array ( [contentType] => application/octet-stream [lastModified] => 1684472937000 [length] => 182402 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/moment_rate.mr [sha256] => fAeu7N9PkekB7v0HqaZ3PDIotvVBkjM3i8e41ablfuI= ) [slip.png] => Array ( [contentType] => image/png [lastModified] => 1684472937000 [length] => 413220 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/slip.png [sha256] => hH56LVKxoisw8+M69RyWkIIWXoWVJMSNjITHye3q+7Q= ) [fits.zip] => Array ( [contentType] => application/zip [lastModified] => 1684472937000 [length] => 5662490 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/fits.zip [sha256] => w7nBKPA6wgf+cmRybNSY+2NqUL++YukCFB0ajEi4gJo= ) [moment_rate.png] => Array ( [contentType] => image/png [lastModified] => 1684472937000 [length] => 90550 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/moment_rate.png [sha256] => bdGPCyaP6C9miu1nc9CcJj47SJykPXoGqKyD6T1RMKo= ) [CMTSOLUTION] => Array ( [contentType] => application/octet-stream [lastModified] => 1684472937000 [length] => 82800 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/CMTSOLUTION [sha256] => U0i4vW65N3VOpCGPOdObg56MV1Cafcguw2UiL4NL2n8= ) [complete_inversion.fsp] => Array ( [contentType] => application/octet-stream [lastModified] => 1684472937000 [length] => 21765 [url] => https://earthquake.usgs.gov/product/finite-fault/us6000kd0n_1/us/1684473120112/complete_inversion.fsp [sha256] => kT4JRJrCnNKna1pb9lNyih4Ftgj3qHnfiJqEoRnzdxA= ) ) ) ) [general-text] => Array ( [0] => Array ( [indexid] => 22762146 [indexTime] => 1684467007242 [id] => urn:usgs-product:admin:general-text:us6000kd0n-1684466990617:1684467005426 [type] => general-text [code] => us6000kd0n-1684466990617 [source] => admin [updateTime] => 1684467005426 [status] => UPDATE [properties] => Array ( [eventsource] => us [eventsourcecode] => 6000kd0n [original-signature] => 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 [original-signature-version] => v1 [pdl-client-version] => Version 2.6.0 2020-11-20 [review-status] => Reviewed [senderemail] => wyeck ) [preferredWeight] => 1 [contents] => Array ( [] => Array ( [contentType] => 1 [lastModified] => 1684467005000 [length] => 1702 [bytes] =>Tectonic Summary
The May 19, 2023, M 7.7 earthquake southeast of the Loyalty Islands occurred as a result of normal faulting near the plate boundary interface between the Australia and Pacific plates. Focal mechanism solutions indicate the earthquake occurred on either a moderately-dipping normal fault striking to the east was or on a moderately-dipping oblique normal and strike-slip fault striking to the southwest. At the location of this earthquake, the Australia plate converges with the Pacific at a rate of approximately 75 mm/yr. At the South New Hebrides Trench, Australia lithosphere sinks beneath the Pacific plate, descending into the mantle and forming the New Hebrides/Vanuatu subduction zone, stretching from New Caledonia in the south to the Santa Cruz Islands in the north.
While commonly plotted as points on maps, earthquakes of this size are more appropriately described as slip over a larger fault area. Normal faulting events of the size of the May 19, 2023, earthquake are typically about 85x35 km (length x width).
The Loyalty Islands region is very active seismically, and the region within 250 km of the May 19, 2023, earthquake has hosted 13 other M 7+ earthquakes over the preceding 50 years. The largest prior events were an M7.7 on February 10, 2021, and an M 7.7 earthquake on May 16, 1995. Because of their remote locations, earthquakes in this region as less likely to create strong shaking in populated areas.
More information about the tectonics of the Tonga-Kermadec subduction zone is available on this story map.
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